Spool construction



July 29.. 1924. 1,502,980-

c. H. cuio SPOOL CONSTRUCTION Filed Juno 9, 192? WIT 88 INVENTOR ATTORNEY Patented Jilly 29, 1924.

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:Mlpliatl'on Hid lune 9; 1925. Serial ID. 587,050.

To aZZ whom it may concern:

Be it known that I, CHAR-Lies H. CUNO;

a citizen of the United States of America,

residing at Meriden, Connectieut, have ina vented a new and useful Spool Construction, of which the following is a specification.

My invention relates to an improved construction for a reel for use in such devices for example as described in United States Letters Patent #1,355,943 of October 19, 1920.

The purpose of the reel is to operate as a carrier upon which is wound an electric cable.

A further purpose of the reel is to act as current carrying means to the respective insulated wires of the cable.

My object is to provide simplified construction which will enable such devices to be rapidly and economically produced, the said construction possessing superior qualities as a current carrying means.

The above, and other, advantages will 2 be apparent to the mechanic skilled in the art from a reading of the following description, and an examination of the accompanying drawings, in which- Figure 1 is an end elevation of the reel.

Figure 2 is an edge view thereof.

Figure 3 is a view of the end of the reel opposite to that shown in Figure 1.

Figure 4 is a cross-section through the middle of the reel.

Figure 5 is a detail View.

All the parts of the device may be easil and cheaply stamped out of sheet material Parts of the sheet material employed are of conducting material, while other parts will be of non-conducting material.

1 represents one head, or end piece, of the reel, the same being struck up from sheet metal-such as copper. This piece is preferably dished as indicated clearly in Figure 4 for the purpose of forming a housing for a winding spring such as commonly used in devices of this character, as shown in the patent above referred to. 2 represents the other head or end piece of the reel, likewise struck up from sheet metal, such as copper. 3 represents the reel hub which is also struck up from sheet metal and is then bent up into cylindrical form.

At one end of the hub 3are integral ears or lugs 44 which are arranged to pass through corresponding apertures in the head-piece 1, the central part of said headpiece beihg preferably depressed or set back so that the ears will lie flush or substantially flush with the surrounding surface of the head-piece 1, as shown in Figure 4. 5-= 5 are ears or lugs integral with the other end of the hub 3. The head-piece 2 has an irregular opening at the center in which is located a correspondingly shaped washer 6 of insulating material (see Figure This washer is provided with apertures through which the lugs or ears 5-5 pass. 7 is a washer of insulating material located between the head-piece 2 and the adjacent end of the hub 3, and likewise between the washer 6 and the hub 3. 88 are washers of insulating material located on the outside of the head-piece 2. Thewashers 7, 8--8 also have apertures through which the lugs 55 project.

When the parts thus described are assembled the ends of the ears 4-4 and 55 may be bent over or crimped so as to firmly secure together all of said parts to form the complete reel or winding drum 9 represents an inturned flange at the center of the head-piece 1 which operates as a bushing for the usual shaft support. The bushing for the other head or endpiece 2 may comprise a tubular member in the form of an eyelet 10. This eyelet bushing 10 may also serve to tie together the end-piece 2 and the several insulating washers aforesaid, before several other parts are assembled therewith.

From the foregoing it will be seen that the washers 6. 7 and 8 effectively insulate the metal head-piece 2 from the hub 3 and metal head-piece 1, thus said parts 1 and 2 may be utilized as current carrying means for the opposite poles of the circuit. It is common practice to insulate said heads from one another, but this has heretofore been done by means of a solid and relatively expensive hub of insulating material.

It should be understood that various changes and modifications in form and detail may be resorted to without departure from the spirit and scope of the invention as set forth in the following claims.

What I claim is:

1. In a reel or winding drum two oppositely arranged sheet metal head-pieces, a sheet metal hub rigidly connecting said head-pieces together, with insulatingmeans for insulating said hub from one of said head-pieces, said insulating means including a part for interlocking said metal parts against rotation.

2. A reel or winding drum comprising two oppositely arranged sheet metal discs forming head-pieces, a hollow cylindrical sheet metal hub connecting said headpieces, with means for insulating said headpieces from each other, said insulating means being located at and on one end of said hub and comprising a plurality of Washers of insulating material, With integral lugs on said hub binding said washers together and a central metallic bushing passing through said Washers and insulated thereby from the other metal parts and forming a center nearing for one end of said reel,

3. A reel or Winding drum comprising two oppositely arranged sheet metal discs forming head-pieces, a hollow cylindrical metal hub connecting said head-pieces, With means for insulating said head-pieces from each other said insulating means being located at one end of said hub and comprising a plurality of Washers of insulating material, said hub and one head-piece being interlocked with one of said Washers to prevent independent rotation, the adjacent disc being also interlocked with one of said Washers to prevent separation of the parts.

CHARLES H. CUNO. 

